For all the excitement around the game, what you can do in it is actually pretty limited. You can collect different Pokemon, gather items to use in the game at “Pokestops” (public places such as the the post office), or fight your Pokemon, either against your own team for practice, or another team to win their turf. But that’s about it.

More features are coming soon, however – such as the ability to trade Pokemon with your friends. Trading was a core element of the old-school Pokemon video and card games, the major way to “catch them all.” But it’s noticeably absent from the current version of Pokemon Go.

Why might this be? Edward Castronova, an economist who works on game economies, says there’s probably a simple reason – if trading isn’t done carefully, it’s one of the easiest ways to upset a virtual economy and ruin a game. Plenty of games have fallen prey to this problem. So instead of introducing trading right away, Pokemon Go’s creators probably will observe how people are interacting with the game first, and then carefully introduce trading later.

Chris Kramer, a spokesperson for Niantic, the developer behind Pokemon Go, wouldn’t say Castronova analysis is correct, but affirmed that trading would soon be incorporated into the game. “Trading is a core element of the Pokemon …